PNG to WebP

Convert PNG images to WebP free. Transparency is preserved and the files get much smaller. Nothing is uploaded.

  • Free
  • Never uploaded
  • No sign-up

Drop files here

or browseJPG, PNG, WebP, GIF, BMP, SVG, HEIC, PDF

How to do it

  1. Drop your PNG files below.
  2. Format is already set to WebP. Quality 85 is a good starting point.
  3. Press Convert. Transparent areas stay transparent.

Transparency survives — this is the key difference from PNG to JPG

WebP supports an alpha channel, so a logo with a transparent background stays transparent. That makes this the conversion to reach for when PNG to JPG would have ruined the image by flattening it onto white.

The size difference is the largest of any conversion here

PNG is lossless, which means a photograph saved as PNG carries an enormous amount of data for no visible benefit. Converting that to WebP routinely cuts the file to a fifth or less of its original size. Even for logos and screenshots, where PNG is genuinely the right format, WebP usually lands 20 to 30 percent smaller.

Lossy by default, and that is usually correct

WebP has a lossless mode, but browsers only expose the lossy encoder through canvas, so the output here is lossy. For photographs that is exactly what you want. For a pixel-art sprite, a screenshot of code, or anything where individual pixels must be exact, stay on PNG.

Questions

Is this free?

Yes. No account, no watermark, no cap on how many files you convert.

Are my files uploaded?

No. The conversion runs inside your browser on your own device. Nothing is sent to a server — you can disconnect from the internet after the page loads and it still works.

Does transparency survive?

Yes. WebP has a full alpha channel, so transparent backgrounds come through intact — unlike converting to JPG, which has to flatten them onto a solid colour.

How much smaller?

For photographs saved as PNG, often 80 percent or more. For logos and screenshots, typically 20 to 30 percent. The exact figure is shown for every image.

Is anything lost?

Yes — the output is lossy WebP, so this is not a lossless round trip. At quality 85 that is invisible for photos and graphics. Keep PNG if individual pixels must be exact.

Should I convert screenshots?

For a web page, yes. For documentation where text must stay perfectly crisp, compare both at your chosen quality first, or keep the PNG.